Tray table base



FIG. 1 is a perspective view of the tray table base showing our newdesign;

FIG. 2 is a front view thereof, the rear having an appearance identicalto the front;

FIG. 3 is a right side view thereof, the left side having an appearanceidentical to the right side;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The ornamental design for tray table base, as shown and described.